Romans 1:21
For although they knew God, they neither glorified Him as God nor gave thanks to Him, but they became futile in their thinking and darkened in their foolish hearts.
Treasury of Scripture Knowledge

when.

Romans 1:19, 28
For what may be known about God is plain to them, because God has made it plain to them. . . .

John 3:19
And this is the verdict: The Light has come into the world, but men loved the darkness rather than the Light, because their deeds were evil.

they glorified.

Romans 15:9
so that the Gentiles may glorify God for His mercy. As it is written: "Therefore I will praise You among the Gentiles; I will sing hymns to Your name."

Psalm 50:23
He who sacrifices a thank offering honors Me, and to him who rights his way, I will show the salvation of God."

Psalm 86:9
All the nations You have made will come and bow before You, O Lord, and they will glorify Your name.

Hosea 2:8
For she does not acknowledge that it was I who gave her grain, new wine and oil, who lavished her with silver and gold--which was crafted for Baal.

Habakkuk 1:15, 16
The Chaldeans bring all of them up with a hook; they catch them in their net, and gather them in their dragnet; so they are glad and rejoice. . . .

Luke 17:15-18
When one of them saw that he was healed, he came back, praising God in a loud voice. . . .

2 Timothy 3:2
For men will be lovers of themselves, lovers of money, boastful, arrogant, abusive, disobedient to their parents, ungrateful, unholy,

Revelation 14:7
He said in a loud voice, "Fear God and give Him glory, because the hour of His judgment has come. Worship the One who made the heavens and the earth and the sea and the springs of waters."

Revelation 15:4
Who will not fear You, O Lord, and glorify Your name? For You alone are holy. All nations will come and worship before You, for Your righteous acts have been revealed."

but became.

Genesis 6:5
Then the LORD saw that the wickedness of man was great upon the earth, and that every inclination of the thoughts of his heart was altogether evil all the time.

Genesis 8:21
When the LORD smelled the pleasing aroma, He said in His heart, "Never again will I curse the ground because of man, even though every inclination of his heart is evil from his youth. And never again will I destroy all living creatures as I have done.

2 Kings 17:15
They rejected His statutes and the covenant He had made with their fathers, as well as the decrees He had given them. They pursued worthless idols and themselves became worthless, going after the surrounding nations the LORD had commanded them not to imitate.

Psalm 81:12
So I gave them up to their stubborn hearts to follow their own devices.

Ecclesiastes 7:29
Only this have I found: I have discovered that God made men upright, but they have sought out many schemes."

Isaiah 44:9-20
All makers of idols are nothing, and the things they treasure are worthless. Their witnesses fail to see or know anything, so they are put to shame. . . .

Jeremiah 2:5
This is what the LORD says: "What fault did your fathers find in Me that they strayed so far from Me, and followed worthless idols, and became worthless themselves?

Jeremiah 10:3-8, 14, 15
For the customs of the peoples are worthless; they cut down a tree from the forest; it is shaped with a chisel by the hands of a craftsman. . . .

Jeremiah 16:19
O LORD, my strength and my fortress, my refuge in the day of distress, the nations will come to You from the ends of the earth, and they will say, "Our fathers inherited nothing but lies, worthless idols of no benefit at all."

Ephesians 4:17, 18
So I tell you this, and testify to it in the Lord: You must no longer walk as the Gentiles do, in the futility of their thinking. . . .

1 Peter 1:18
For you know that it was not with perishable things such as silver or gold that you were redeemed from the empty way of life you inherited from your forefathers,

their foolish.

Romans 11:10
May their eyes be darkened so they cannot see, and their backs be bent forever."

Deuteronomy 28:29
so that at noon you will grope about like a blind man in the darkness. You will not prosper in your ways. Day after day you will be oppressed and plundered, with no one to save you.

Isaiah 60:2
For behold, darkness covers the earth, and thick darkness is over the peoples; but the LORD will rise upon you, and His glory will appear over you.

Acts 26:18
to open their eyes, so that they may turn from darkness to light and from the power of Satan to God, that they may receive forgiveness of sins and an inheritance among those sanctified by faith in Me.'

1 Peter 2:9
But you are a chosen people, a royal priesthood, a holy nation, a people for God's own possession, to proclaim the virtues of Him who called you out of darkness into His marvelous light.

Parallel Verses
New American Standard Bible
For even though they knew God, they did not honor Him as God or give thanks, but they became futile in their speculations, and their foolish heart was darkened.

King James Bible
Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.

Holman Christian Standard Bible
For though they knew God, they did not glorify Him as God or show gratitude. Instead, their thinking became nonsense, and their senseless minds were darkened.

International Standard Version
For although they knew God, they neither glorified him as God nor gave thanks to him. Instead, their thoughts turned to worthless things, and their senseless hearts were darkened.

NET Bible
For although they knew God, they did not glorify him as God or give him thanks, but they became futile in their thoughts and their senseless hearts were darkened.

Aramaic Bible in Plain English
Because they knew God, and they did not glorify him as God, nor did they give him thanks, so that they became destitute in their reasoning and became dull in their heart without understanding.
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